The US remains open to diplomatic negotiations with Iran to resolve the dispute over the Islamic state's nuclear activities, US President Barack Obama said on Thursday.

The US remains open to diplomatic negotiations with Iran to resolve the dispute over the Islamic state's nuclear activities, US President Barack Obama said on Thursday.

Speaking at the opening of the UN General Assembly in New York, Obama called on Iran to demonstrate that its nuclear work is solely for peaceful purposes and not designed to a acquire an atomic weapon.

"The US and the international community seek a resolution to our differences with Iran, and the door remains open to diplomacy should Iran choose to walk through it," he said.